Vuillermoz was in the lead from about 1600 met to 200 met to the finish line, at which point G Izaguirre passed him and stayed in front almost to the finish line, where Demare beat him by a bike throw. So, it seems to me that the only time that the riders were on the road in the order Demare, Izaguirre, Laporte (the KOM3 result), was on the finish line.